Data-centric programmatic interfaces provide fine-grained access to Web services, but also require in-depth domain expertise to use.
Interactive interfaces provide a higher-level access model to Web services in which instead of individual operations being exposed, the user interface markup is exposed to the client application. Interactive Web service interfaces provide a set of standard invocation calls that facilitate retrieving each Web service's markup as well as updating the state of each Web service based on user interactivity.
The WSRP specification is based on interactive interfaces and defines a framework for using Web services within portals. By using interactive interfaces instead of programmatic interfaces, individual Web service portlets can be easily added or removed from the overall portal without custom programming and knowledge of the Web service or its functional domain.
Simply developing a Web service and making it available for others does not necessarily fulfill any business goal. A Web services management platform enables a company to manage individual Web services as business resources that can be manipulated and used to meet business goals.
